California friction testing at mnroads ca 342
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California Friction Testing At MnROADs (CA-342) PowerPoint PPT Presentation


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California Friction Testing At MnROADs (CA-342). How Things Work November 12, 2008. CA342 Friction Testing. CA-342 Equipment Operation. Slide. Release. Distance Measuring Scale. Springs. Smooth Tire. Stand. 6 mm Offset Above Pavement. Shipping and Crating.

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California Friction Testing At MnROADs (CA-342)

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California Friction Testing At MnROADs (CA-342)

How Things Work

November 12, 2008


CA342 Friction Testing


CA-342 Equipment Operation

Slide

Release

Distance Measuring Scale

Springs

Smooth Tire

Stand

6 mm Offset Above Pavement


Shipping and Crating


Calibration of the Equipment

WD 40

Glycerin Container

Power Cable

Environmental Trays

Serrated Edge Calibration Plate

Mounting Plate


MnROADs Test Locations

  • Seven Friction Tests Conducted at Each Location (0, 5, 15, 30, 45, 90, 0 degrees)

  • Three Locations Tested within Each Cell

  • MnROADs Cells Tested

    • Cell 7 NGCS

    • Cell 8 CDG

    • Cell 9 NGCS Lite

    • Cell 10 RTT

    • Cell 13 Astro Turf

    • Cell 15 AC


Operation of Test Device for Determining Effect of Test Angle on Friction Value

0

5

15

30

45


Testing at 90 Degrees


Placing Glycerin on Wheel and Pavement


Friction as a Function of Test Angle


Questions?


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